Printing machine



Jan; 8, 1929.

S. OHARA PRINTING MACHINE Filed July 1927 iNVEN'l'UV EyY/KW.QM.W%YS

Patented Jan. 8, 1229.

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SKIDMORE OHAR-A, or wALTHaia, MA3SACEUSETTS, ASSIGNOR To OHARAVIAL'II-IAM GOMFANY, or WAL HAM, M ssAoHUsETTs, A CORPORATION or ,MASSACH'USETTS.

PRINTING MACHINE.

The invention relates to an improvement in machines for printing. It is especially applicable to machines for printing or enibossing on glass, china, porcelain, enamelled goods or other frangible articles but it is not limited to machines for printing on articles of that character. It relates especially to machines in which the printing and embossing member is reciprocable and has a printing surface on which the character, marking or design is imprinted or embossed by a die in such manner that the printing surface is adapted to imprint or emboss said design on the work, the die and the work -holder being alternately brought into alinev ment with the printing member.

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The present invention comprises a machine having a' double headed reversible printing member mounted betweena die and a work holder. v j

One object of the present invention is to provide means for actuating the Work sup-v port to cause the work to engage one printing member and move both printing members as a unit until the other printing member engages the die. Another object is to provide means for reversing the positions of the printing members after each complete stroke.

The invention will be fully understood from the followng description when taken in connection with the accompanying drawings and the novel features thereof will be pointed out and clearly defined in-the claims at the close of this specification.

In the drawings Fig. 1 is a fragmentary view in side elevation and partly in diagram of a machine em- 'left of Fig. 1.

bodying the invention showing the several members in position ready for the printing operation.

Fig. 2 is a front elevation viewed fromthe Fig. 3 is enlarged detail sectional taken on line 33 of Fig. '1. p

Fig. 4 is a fragmentary view, similar to View I Fig. 1, showing one printing member in contact with the work and the'other printing member in Contact with the inkingdie. Referring to the drawings there is shown at 10 a frame or casting to hold the working parts. Mounted in guide ways in the frame is a slidable carrier 11 onwhich is mounted a die 12 having formed thereon the design to be printed or embossed on the work. Said die carrier. is slidable in said guideways'to bring the die into and out of alinement with the printing member. Secured to the underside of said die carrier is a rack 13 which engages a gear 14 mounted on a shaft 15 which maybe actuated in any suitable manner to reciprocate thesaid slide back and forth to move the dieinto and out of operative position with relation to the printing member. At 16 is shown an inking roll which will be engaged by the'die 12 during its backward movement and again during its forward movement. At 17 is shown a wiper to remove the surplus ink from the die.

A double headed carrier G for the printing members is provided. with trunnions 18 journalled in boxes 19, 19 which arevertically slidable on guide rods .20, 20 so that said carrier may be vertically reciprocated co-axially with the die 12 when 1 said die 12 is in operative position as shown in Figs. 1 and 2. Said carrier has two oppositely disposed heads 21, 22 each carrying a printing member 5 which is preferablya pad adapted to take up ink from the die 12 at one stroke and at another stroke to transfer the impression to the work. 1

At 2a is shown a work holder and ,at -L0 is shown a piece of work, enamelled ware or any other article tobe prmted'in position to 7 I sage in. the frame of the machine. It is normally held in its downward position as shown 1n Fig. 1 by a spring 27. Pins 28 project from "the opposite side of said spindle through slots 30 in the arms 31, 81 of'a' lever :32.

pivoted at 33 whereby the said spindle 25 and the-work holder mounted thereon may be moved upward during the operation,-

against the tendency of the spring 27 to hold the said Work holder in its'dovvnward posi- 1 tion.

Mounted on one of the trunnions 18 is a Wheel 34 by which the holder C for the printing members zmay'be rotated on its axis. It is intended :that'ithe'holder C shall be rotated only through 180 at each operation ,asto ,lalternately bring the printing membersf5411espectively into their upper and lower positions'in direct 'zilineinent with the die 12. In order to insure the stopping-ofthe rotation at the end of {L half revolution and leave it in properly :ee-ntered position ya spring seated pin 6 ismounted in a slot in ithe side oi one oi th'e boxes mend:the face :o' the hendivheel is tormedtvitlrtwo slots 57 Q7180" apart intovone or -theother of which 'sai'dpin 6 is adaptedto snap when the Wheel 'lhas'ibeenroteted through 180 The SttltltllOtS 17' ere prefl erablyconcave and the SELlCl pm '6 is ellso rounded at its end *sothah'theipins inayeesilyride out of theseid slots' by slight Pressure on'thehsnd v-rheel when it 1s desiredrto positively rotate said wheel-thereby 1 overcoming thespring 3S Whichtenos to hold said pin in lts lo'ckmgpositionln 'OPGIHLULOH, assuming the parts 1n the :position shown in'Figs. '1 and 2 *the work :to'be printed Will be positioned on the work -$upport,";the die '12 having been =alrea'dy drilled by previous movement. :By lifting flip onthe 'handl-e of -the lever 32 the work support and the Workun'oimted thereoirwill heraised; 'i fiter beingra-ised al short distance t eSaidwofk will-comeintocontact WithLthe ilo'tvermost printing member end during the continued upwvard: movement of: the said lever the said Work being inengagement 'vviththe lowe'rmost printing member Will ceuse the holder' C an'd the guide members 19 to move bodily upward on t'he guide rods 20, B'O until :the upper pad pc -comes into contact withithe :die 12." -Thus it will beseen "tduringthis same upward st rake the 'w'oi will receive the impression from thfe "lotve'r pad 5', end *the upper pad 5 will be pr'es'sed lnto engagement With the dieandreceive the impression winch therle'ver is released the-spring QTWlll :push V the pad holder 17 doivnwer'd end when it z y, 'i. 4 v film's descended into the POSltlOll shown on -1 the said wheel i l hie" heoperzitedto =sition Efor :the Q next printi-ne operation and :to 'hrin-g'the pad whieh hesust printedinto spositi'on'zto hex-moved into oentec-t.awiththe difiithtllQinYt upwardstroke.

' A :stop vm-echain'is n is provided whereby gxhenwthe pedzholder G'JfiQVQSrClQWDW-QIT I w ll he; m ted n aetsjxlownwerd movement, the Work holder hav ng 21; longer range of inserted on the uvork holder.

7 not form e partoifithepresentinvention.

in-tingpads end :anidone on-the lo 1n vertical ehnemen-t 'wi'th the.;die,e ver @movable 'sverlt holder end 'meens {to e gegement with one o therehyvelso move the 10th movement than the pad holder so that after the pad holder has stopped the Work supportmay he moved down a, still further distenceto allow sufficient clearance space for inserting and removing the Work. The stop mechanism provided for this purpose consistsof collars 39 mounted respectively on the tWo guide rods 20, 20. In the meantime the Work holder Will have descended into the position shown infliigs. 1 and Zycarrying the Work nolder' some distance below the .printing member so that the Work may be readily removed and a fresh piece of Work In the mean- 'lJlHIGZL-lSO the die carrier may be operated to carry 'Jt-he die back over the --inl ing roll-end then {forward again "into operative position ssshown in F 1 ready ti 0 sLiCC'ee'd -g printing operation. Any s1. le meshinism may be provided for causi t1 1e reciprocation of the die carrier, it not ';being 'cleemed necessary to show-such inechenisnnin detail in the present drawings es thetxtloes 7 What :1 claim is: V Y

1. In n printingrmechine, a, d-ie, two efrintlllg members, holder therefonhne otsa-id printing -.Inembers leeing on {the upperkside and-the other ontheiloeversiderof-said holder, said holder "being invertible {to bring [either of said printing-:m-emberson the upper; side, n evork holder, vend means 'for shoving 'tlle work holdertopress. the Work mounted thereion into engagement with the flower printing member and together therewith move-the upper printing :member into engagement with; the die gto receiveink from; the die.

' 2. In" a- ;p1inting.mech-i-ne,we! die, t;wo printing members, s gholder therefor; Qneyof said printing =memhers 1bein-g ion the upper side and the other on the lower side of said holder, said holderheing-invertible todaring either of said printing inemh'ers on the upper side a Work h0ldser,--meens-for moving {the \work ho-lder gto press the work i mounted rther. on into engagement with the printing 'member-and ito'gether ,therewith move the upper printingn 1bQr'ii1 tO-0n gagement with thedieto receive the imprint r from the die, and means for turning the hold 115 .ergfor the printinggmembersito bring the upper printing in-ember to the ilower 1; position end to b rinthe 1.19.?(51' printing ,member to the npperposition. V r

3.- In a printing press, e die, aive-rti-celly 120 ioviehle 'CGJIFiQl having two print-in; hers mounted then'eon one on thevupp r sideailj-lld both 1101 ess the stee in to en; rmtmg ine Aer innd er prmtingniember ragainststhegdie.

4. In a printing machine, adie, a movable iii 5. In a printing machine, a die, two printing members, a holder on which said printing members are mounted facing in opposite directions and a work holder, said die, printing members and work holder beingadapted .to be brought into alinement with each other, and means for moving said work holder to move the work into engagement with one of the printing members and to continue the movement to move the other printing memher into engagement with the die, said holder for the printing members being rotatable to shift the respective positions of the printing members with relation to the die and the work.

6. In a printing machine, a die, a work holder at some distance below the die, two printing members mounted on a holder rotatable on a horizontal axis intermediate the die and the work holder, said printing members facing in opposite directions, means for rotating said holder for the printing members so as to bring one printing member in posi-' tion to face the die and the other printing member in position to face the work, and whereby said printing members may be reversed in position relative to the die and work, and means for moving the work sup port so as to cause'the work thereon to engage the lower printing member'to receive the imprint and move the holder for the printing members upward to bring the other printing member into engagement with the die.

7. In a printing press, a. die, a reciprocable work holder, a rotatable member 011 which are mounted two oppositely disposed printing members, a reciprocable carrier for said mount, means for moving said work holder to bring the work thereon into engagement with one of the printing members and to thereby more the said carrier and the printing members to cause the other printing member to engage the die.

8. in a printing press, a die, a reciprocable work holder, two printing members mounted on opposite sides of a rotatable mount for said printing members, a reciprocable carrier for said mount and means to operate the work holder to press the work into engagement with one printing member to receive the imprint thereof and'on the same stroke to move the printing member carrier to bring the other printing member into engagement v with the die. a

' 9 In a printing press, a die, a reciprocable work holder, two printing members mounted on opposite sides of a rotatable mount for said printing members, a reciprocable carrier for said mount and means to operate the work holder to press the work into. engagement with one printing member to receive the imprint thereof and on the same stroke to'move the printing member carrier to bring the other printing member into engagement with the die, said mount for the printing members being ournalled in said carrier and rotatable on its axis toshift the relative positions of the two printing members.

10. Inv printing press, a die and a work holder spaced apart from each other, the work holder being reciprocable toward and from the the, a rotatable mount for printing members intermediate the die and the work holder, printing members mounted on opposite sides of sald printing member holder ward and from the die, means whereby said work holder may be moved into engagement with one of the printing members and on the same stroke to thereby move the other printing member into engagement with the die.

11. In a printing press, a die and a work holder spaced apart from each other, the work holder being reciprocable toward and from the die, a rotatable mount forprinting members intermediate'the die and thework holder, printing members mounted on opposite sides of said printing member holder whereby one of the printing members is adapted toface the work holder while the other printing member faces the die, a shaft on which said printingmembers are mount-- ed, sli-dable bearings for said shaft whereby said printing member holder is movable toward and from the die, means whereby said work holder may be moved into engagement with one of the printing members and on the same stroke to thereby move the other printing member into engagement with the die,

said printing member holder being adapted to be turned on its axis after a printing operation to reverse the positions of the two printing members so that at the next operation the printing member which has just performed the printing upo-n'thework will face the die and the printing member which has just been in contact with the die will face the work.

12. In a printing press, a die and a work holder, spaced apart from each other, the" work holder being'reciprocable in a direction toward and from the die, a rotatable mount T01 printing member-s intermediate the "die and the Work holder, printing members on ep-pesi'tfe sides of said printing member mount whereby one ofthe printing members i'se-dhpted f0 fate the work holder While the od'lef prim 15 member faces the die, a'sha'ft en which said printing members are mounted, shdable bearings for said shaft whereby said printing member motlntis movable t0- Ward and frem the die and means whereby said work holder may be moved into engagement with one of the printing members and by continued movenxent in the same direction to thereby move the other printing member into engagement with the die.

In testimony whereof I aflix my signature.

SKIDMORE OI-IABA. 

